Two pieces of math diary

Count beans

Today, my mother brought me 500 grams of beans, let me estimate how many. When I saw it, my mind was blank and I didn't know how to start. After a pause, I brought a measuring cup and a bottle cap. In less than ten minutes, I estimated that there were about 3296 beans in 1 kg. This is my method:

(1) Divide the beans into 4 parts in a measuring cup.

(2) Divide the beans in a cup into four parts with a medicine bottle cap.

(3) Start counting about 103 beans in a bottle cap.

(4) Calculate that there is about 103×4=4 12 in a measuring cup.

(5) Finally, it is calculated that about 4 12×4= 1648 in the four measuring cups.

(6)500 grams of beans is about 1648. Because there are two 500 s in 1000, there are about 1648×2=3296 beans in 1000.

By counting beans, I know that when I encounter problems in my life and study, any problem will be solved with more brains.

I got up with my brother this morning. I asked him, "What do you want for breakfast?"

He replied, "I want to eat steamed buns and meat steamed buns." I went to ask my mother for money. As I walked, I thought: My brother and I eat two, one for four, and each meat bag costs 80 cents. * * * How much?

4×8

=32 degrees (angle)

=3.2 (yuan)

A: * * * 3.2 yuan.

After I took the 3.2 yuan, my brother said, "I want four!" "

I asked, "Can you finish eating?"

He said confidently, "Of course you can finish it!"

I thought again: he wants four, and I want two, at eighty cents each. How much is it? * * * How much?

2×8+32 4.8-3.2= 1.6 (yuan)

= 16+32

=48 degrees (angle)

=4.8 (yuan)